WO2012176059A1 - Method for reinforcing the levees of rivers, lagoons and lakes and controlling seepage therethrough - Google Patents

Method for reinforcing the levees of rivers, lagoons and lakes and controlling seepage therethrough Download PDF

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Publication number
WO2012176059A1
WO2012176059A1 PCT/IB2012/001245 IB2012001245W WO2012176059A1 WO 2012176059 A1 WO2012176059 A1 WO 2012176059A1 IB 2012001245 W IB2012001245 W IB 2012001245W WO 2012176059 A1 WO2012176059 A1 WO 2012176059A1
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Prior art keywords
trench
river
membranes
rivers
lakes
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PCT/IB2012/001245
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Spanish (es)
French (fr)
Inventor
Pablo POCH FIGUEROA
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Poch Figueroa Pablo
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Publication of WO2012176059A1 publication Critical patent/WO2012176059A1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/10—Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like
    • E02B3/102—Permanently installed raisable dykes

Definitions

  • TITLE PROCEDURE FOR REINFORCEMENT AND REGULATION OF THE FILTRATIONS OF THE JARILLONES OF THE LAGOON AND LAKE RIVERS
  • Another objective not less important is to avoid the loss of housing. Another objective is to avoid economic losses due to flooding in crops, livestock, agricultural industries and others.
  • CONFIRMATION C0PY Another objective is to be able to control the contamination of the dredged sediments of the rivers by burying these in the ditch and its membrane membranes
  • This invention is about a process or method to regulate the overloading of the groundwater levels in the lands adjacent to lagoon rivers or lakes that raise their levels above that of the land generating floods by filtration of water through their vases, the process is to make a ditch in the jar along the lagoon or lake river and with its earth removed reinforce the jar and then introduce into the ditch an ecological membrane in waterproof polyolefin that regulates groundwater levels in the surrounding land depending of its height or if it has holes in what quantity and of what size they are as well as the distance of separation or overlap between one and another membrane at the time of being introduced being able to place membrane in a wall or in the two walls of the trench then fill it with the contaminant sediments extracted with the dredging of the river thus being buried and then cover them with a portion of land from the previously removed from the ditch in order to reforest the banks of lakes or lakes.
  • Fig. 1 shows a frontal cut of a river with its normal level.
  • Figure 2 shows a frontal cut of a river flooding the surrounding lands by filtration of the vases when exceeding the ground levels.
  • Figure 3 shows a front cut of the excavation of a ditch in a river jar to introduce the membrane
  • Figure 4 shows a side view from above of the introduction of the membranes into the trench
  • Figure 5 shows a frontal cut of the dredging of the toxic sediments of the river and its deposit inside the ditch.
  • Figure 6 shows a side view from above of the overlapping of water table regulating membranes
  • Figure 7 shows a frontal section of the basin of a river recovered and reforested treated with the method of waterproofing and reinforcement membranes of vases
  • Figure 2 shows how the ground 4 is flooded by the excess of the groundwater table 7 on the ground 4 when the level 3 of the river 1 is raised by filtering the water through the vases 2 flooding without the need of overflowing over its top 6
  • Figure 3 shows the excavator 8 making the trench 9 parallel along the river 1 equally deep to the river 1 and with this material extracted 10 from the trench 9 the jarillon 2 is reinforced next to the ground 4.
  • Figure 4 shows how the membrane sections 11 are introduced in polleolefins inside the trench 9 of the jarillon 2 being located on one of its walls 4 with the help of the excavator 8
  • Figure 5 shows the crane 12 dredging the sediments 13 from the bottom of the river 1 which are discharged into the trench 9 between the ecological polleolefin membranes 11 that rest on the walls 14 of the trench 9
  • Figure 6 shows the overlap 15 of the ends of the poleolefin membranes 11 located within the trench that depending on the overlapping distances and the high serve as permeability regulators for increasing or decreasing the phreatic filtration levels of the vases 2
  • Figure 7 shows the landscape of the Vases with the ditch full of sediments 13 deposited between the membranes of poleolefins covered with a layer of soil 10 used in the reinforcement of the vases to reforest and plant trees, also shows how level 3 of river 1 exceeds the level of terrain 4 but groundwater levels 7 do not affect or flood grounds 4 because the vases are waterproofed with

Abstract

The invention relates to a method for reinforcing the levees of rivers, lagoons and lakes and controlling seepage therethrough, comprising the formation of a ditch along the length of the levee or dyke on the bank of the river, lagoon or lake. Subsequently, the ditch is reinforced with material extracted from the dyke, impermeable polyolefin membranes are inserted therein, the ditch is filled with sediments dredged from the bed or the river and, finally, said sediments are covered with earth.

Description

PATENTE DE INVENCION  PATENT OF INVENTION
TITULO: PROCEDIMIENTO DE REFUERZO Y REGULACIÓN DE LAS FILTRACIONES DE LOS JARILLONES DE LOS RÍOS LAGUNAS Y LAGOS TITLE: PROCEDURE FOR REINFORCEMENT AND REGULATION OF THE FILTRATIONS OF THE JARILLONES OF THE LAGOON AND LAKE RIVERS
DESCRIPCIÓN DE LA INVENCIÓN DESCRIPTION OF THE INVENTION
ESTADO DE LA TÉCNICA STATE OF THE TECHNIQUE
En las técnicas utilizadas para el control de los desbordamientos de los ríos generalmente la que se acostumbra hacer por ser la más económica, el dragado y limpieza del fondo de los rio, utilizando los sedimentos y lodos para levantar los jarillones lo cual genera gran contaminación y no sirve para controlar el nivel del flujo freático cuando el nivel del rio está por encima del de los terrenos, emblandeciendo el jarillon dejándolo susceptible al derrumbe siendo el primer indicio generador de inundaciones iguales a las producidas por desbordamientos a las zonas aledañas, existen técnicas más eficaces para el control del nivel freático pero no económicas, como es la de canalizar los ríos con hormigón las cuales se pueden realizar en zonas urbanas o en ríos que no sean de alto caudal. Debido a las inundaciones que azotan al mundo por el efecto invernadero y por las técnicas actuales al no dar solución efectiva, económica e inmediata como lo muestra la patente N ES 2208013 (A1 ) se presenta el siguiente procedimiento o método para reforzar e impermeabilizar los jarillones y controlar el desbordamiento de los ríos por los niveles freáticos. OBJETIVO DE LA INVENCIÓN In the techniques used for the control of river overflows, usually the one that is used to be the most economical, dredging and cleaning the bottom of the river, using sediments and sludge to lift the vases which generates great pollution and it does not serve to control the level of the phreatic flow when the level of the river is above that of the land, softening the jarillon leaving it susceptible to collapse being the first evidence of flooding equal to those produced by overflows to the surrounding areas, there are more techniques effective for the control of the phreatic level but not economic, such as channeling rivers with concrete which can be carried out in urban areas or in rivers that are not high flow. Due to the flooding that plagues the world due to the greenhouse effect and current techniques, as it does not provide an effective, economical and immediate solution, as shown in patent N ES 2208013 (A1), the following procedure or method is presented to reinforce and waterproof the vases and control river overflow by groundwater levels. OBJECTIVE OF THE INVENTION
Es controlar la problemática de las inundaciones de terrenos por la filtración del agua (niveles freáticos) de los ríos lagunas y lagos Otro objetivo importante es el de evitar pérdidas de vidas Humanas, animales y vegetales por las inundaciones It is to control the problem of land flooding by water filtration (groundwater levels) of lakes and lakes. Another important objective is to avoid loss of human, animal and plant life due to flooding.
Otro objetivo no menos importante es evitar la pérdida de viviendas Otro objetivo es la de evitar las pérdidas económicas por la inundación en cultivos, ganadería, industrias agrícolas y demás. Another objective not less important is to avoid the loss of housing. Another objective is to avoid economic losses due to flooding in crops, livestock, agricultural industries and others.
CONFIRMATION C0PY Otro objetivo es la de poder controlar la contaminación de los sedimentos dragados de los ríos al enterrarse estos en la zanja y sus membranas membrana CONFIRMATION C0PY Another objective is to be able to control the contamination of the dredged sediments of the rivers by burying these in the ditch and its membrane membranes
DESCRIPCION DETALLADA DE LA INVENCIÓN DETAILED DESCRIPTION OF THE INVENTION
Esta invención trata sobre un proceso o método para regular la sobrecarga de los niveles freáticos en los terrenos aledaños a ríos laguna o lagos que elevan sus niveles por encima del de los terrenos generándoles inundaciones por filtración del agua a través de sus jarillones, el proceso es el de hacer una zanja en el jarillon a lo largo de río laguna o lago y con su tierra extraída reforzar el jarillon para luego introducir dentro de la zanja una membrana ecológica en poleolefina impermeable que es la que regula los niveles freáticos en los terrenos aledaños dependiendo de su altura o si tiene orificios en qué cantidad y de que tamaño son como también por la distancia de separación o de traslape entre una y otra membrana en el momento de ser introducidas pudiéndose colocar membrana en una pared o en las dos paredes de la zanja para luego rellenarla con los sedimentos contaminantes extraídos con el dragado del rio quedando así sepultados para luego cubrirlos con una porción de tierra de la anteriormente removida de la zanja para poder reforestar así las orillas de los ríos lagunas o lagos. This invention is about a process or method to regulate the overloading of the groundwater levels in the lands adjacent to lagoon rivers or lakes that raise their levels above that of the land generating floods by filtration of water through their vases, the process is to make a ditch in the jar along the lagoon or lake river and with its earth removed reinforce the jar and then introduce into the ditch an ecological membrane in waterproof polyolefin that regulates groundwater levels in the surrounding land depending of its height or if it has holes in what quantity and of what size they are as well as the distance of separation or overlap between one and another membrane at the time of being introduced being able to place membrane in a wall or in the two walls of the trench then fill it with the contaminant sediments extracted with the dredging of the river thus being buried and then cover them with a portion of land from the previously removed from the ditch in order to reforest the banks of lakes or lakes.
La presente invención cumple con estas necesidades y cuenta con otras ventajas como la de poder regular los niveles freáticos en zonas aledañas a los ríos The present invention meets these needs and has other advantages such as being able to regulate groundwater levels in areas adjacent to rivers
Las características novedosas que se consideran como fuente de esta invención son expuestas en detalle dentro de las reivindicaciones adjuntas, serán explicadas con la descripción detallada junto con sus ventajas adicionales su entendimiento será mejor con la descripción clara y su modalidad preferida, con la debida referencia a los dibujos que la detallan The novel features that are considered as a source of this invention are set forth in detail within the appended claims, they will be explained with the detailed description along with their additional advantages their understanding will be better with the clear description and their preferred modality, with due reference to the drawings that detail it
BREVE DESCRIPCIÓN DE LAS FIGURAS BRIEF DESCRIPTION OF THE FIGURES
Para aclarar más la invención y sus ventajas comparadas con la técnica conocida, se describe a continuación con la ayuda de los dibujos y anexos las posibles formas de realización como los ejemplos de la aplicación de dichos principios en los dibujos a continuación. La fig. 1 muestra un corte frontal de un rio con su nivel normal. To further clarify the invention and its advantages compared to the known technique, possible embodiments are described below with the help of the drawings and annexes as examples of the application of said principles in the drawings below. Fig. 1 shows a frontal cut of a river with its normal level.
La figura 2 muestra un corte frontal de un rio inundando los terrenos aledaños por filtración de los jarillones al superar los niveles del terreno. Figure 2 shows a frontal cut of a river flooding the surrounding lands by filtration of the vases when exceeding the ground levels.
La figura 3 muestra un corte frontal de la excavación de una zanja en un jarillon de un rio para introducir la membrana Figure 3 shows a front cut of the excavation of a ditch in a river jar to introduce the membrane
La figura 4 muestra una vista lateral desde arriba de la introducción de las membranas dentro de la zanja Figure 4 shows a side view from above of the introduction of the membranes into the trench
La figura 5 muestra un corte frontal del dragado de los sedimentos tóxicos del rio y su depósito dentro de la zanja. La figura 6 muestra una vista lateral desde arriba del traslape de membranas reguladoras del nivel freático Figure 5 shows a frontal cut of the dredging of the toxic sediments of the river and its deposit inside the ditch. Figure 6 shows a side view from above of the overlapping of water table regulating membranes
La figura 7 muestra un corte frontal de la cuenca de un rio recuperado y reforestado tratado con el método de membranas de impermeabilización y refuerzo de jarillones Figure 7 shows a frontal section of the basin of a river recovered and reforested treated with the method of waterproofing and reinforcement membranes of vases
DESCRIPCIÓN DE LA INVENCIÓN CON RESPECTO A LAS FIGURAS Con referencia a las figuras puede verse fácilmente en la figural el rio 1 con sus jarillones 2 y su nivel 3 que no supera el nivel del terreno 4 donde la filtración o el nivel freático 7 no lo humedece ni lo inunda. DESCRIPTION OF THE INVENTION WITH REGARD TO THE FIGURES With reference to the figures, the river 1 with its vases 2 and its level 3 that does not exceed the level of the terrain 4 where the filtration or the water table 7 does not dampen it can easily be seen in the figural It doesn't flood it.
La figura 2 muestra como se inunda el terreno 4 por el exceso del nivel freáticos 7 sobre los terreno 4 al subirse el nivele 3 del rio 1 filtrando el agua por los jarillones 2 inundando sin necesidad del desbordamiento por encima de su tope 6 Figure 2 shows how the ground 4 is flooded by the excess of the groundwater table 7 on the ground 4 when the level 3 of the river 1 is raised by filtering the water through the vases 2 flooding without the need of overflowing over its top 6
La figura 3 muestra la excavadora 8 haciendo la zanja 9 paralela a lo largo del rio 1 igual de profunda al rio 1 y con este material extraído 10 de la zanja 9 se refuerza el jarillon 2 al lado del terreno 4. Figure 3 shows the excavator 8 making the trench 9 parallel along the river 1 equally deep to the river 1 and with this material extracted 10 from the trench 9 the jarillon 2 is reinforced next to the ground 4.
La figura 4 muestra como se introduce los tramos de membrana 11 en poleolefinas dentro de la zanja 9 del jarillon 2 ubicándose en una de sus paredes 4 con la ayuda de la excavadora 8 la figura 5 muestra la grúa 12 dragando los sedimentos 13 del fondo del rio 1 los cuales son descargados en la zanja 9 entre las membranas de poleolefinas ecológicas 11que se apoyan sobre las paredes 14 de la zanja 9 La figura 6 muestra el traslape 15 de los extremos de las membranas de poleolefinas 11 ubicadas dentro de la zanja que dependiendo de las distancias de traslape y lo altas sirven de reguladores de permeabilidad para el aumento o disminución de los niveles de filtración freáticos de los jarillones 2 La figura 7 muestra el paisaje de los jarillones con la zanja llena de sedimentos 13 depositados entre las membranas de poleolefinas cubierta con una capa de tierra 10 de la usada en el refuerzo de los jarillones para poder reforestar y sembrar árboles, también muestra como el nivel 3 del rio 1 supera el nivel del terreno 4 pero los niveles freáticos 7 no afectan ni inundan los terrenos 4 por estar impermeabilizados los jarillones con las membranas de poleolefinas como se muestra con los pasos de las imágenes anteriores. Figure 4 shows how the membrane sections 11 are introduced in polleolefins inside the trench 9 of the jarillon 2 being located on one of its walls 4 with the help of the excavator 8 Figure 5 shows the crane 12 dredging the sediments 13 from the bottom of the river 1 which are discharged into the trench 9 between the ecological polleolefin membranes 11 that rest on the walls 14 of the trench 9 Figure 6 shows the overlap 15 of the ends of the poleolefin membranes 11 located within the trench that depending on the overlapping distances and the high serve as permeability regulators for increasing or decreasing the phreatic filtration levels of the vases 2 Figure 7 shows the landscape of the Vases with the ditch full of sediments 13 deposited between the membranes of poleolefins covered with a layer of soil 10 used in the reinforcement of the vases to reforest and plant trees, also shows how level 3 of river 1 exceeds the level of terrain 4 but groundwater levels 7 do not affect or flood grounds 4 because the vases are waterproofed with the poleolefin membranes such as s and shows with the steps of the previous images.
LISTA DE ELEMENTOS LIST OF ELEMENTS
PROCEDIMIENTO DE REFUERZO Y REGULACIÓN DE LAS FILTRACIONES DE LOS JARILLONES DE LOS RÍOS LAGUNAS Y LAGOS  PROCEDURE FOR REINFORCEMENT AND REGULATION OF THE FILTRATIONS OF THE JARILLONES OF THE LAGOON AND LAKE RIVERS
1. El rio  1. The river
2. Jarillones del rio  2. River Vases
3. Nivel del rio  3. River level
4. el nivel del terreno  4. the ground level
5.  5.
6. Tope del jarillon  6. Top of the jarillon
7. Filtración o nivel freático  7. Filtration or water table
8. Excavadora  8. Excavator
9. Zanja  9. Ditch
10. Material extraído de la zanja  10. Material extracted from the trench
11. Membrana  11. Membrane
12. Grúa  12. Crane
13. Sedimentos del rio  13. River sediments
14. Paredes de la zanja  14. Walls of the ditch
15. traslape de los extremos de las membranas  15. overlapping the ends of the membranes

Claims

REIVINDICACIONES
1- Procedimiento para la obtención de reguladores de los niveles freáticos de los jarillones a partir de membranas ecológicas enterradas a las orillas de los ríos, lagunas y lagos caracterizado por qué comprende las etapas de: a- zanjado a la orilla del rio 1- Procedure for obtaining regulators of the water table levels of the vases from ecological membranes buried on the banks of the rivers, lagoons and lakes characterized by the fact that it includes the stages of: reached along the river bank
b- refuerzo del jarillon con el material extraído del zanjado  b- reinforcement of the jarillon with the material removed from the trench
c- deposito de membranas en poleolefinas dentro de la zanja  c- deposit of membranes in poleolefins inside the trench
d- depósito de los sedimentos dragados del rio dentro de la zanja y sus membranas  d- deposit of the dredged sediments of the river within the ditch and its membranes
e- recubrimiento con tierra de los sedimentos contaminaste depositados dentro de la zanja 2- Procedimiento según la reivindicación 1 caracterizado por la excavación de una zanja (9) a lo largo de las orillas de los ríos (1) lagunas o lagos  e- grounding of the contaminated sediments deposited inside the trench 2- Procedure according to claim 1 characterized by the excavation of a ditch (9) along the banks of the rivers (1) lagoons or lakes
3- Procedimiento según la reivindicación 1 y 2 caracterizado por el reforzamiento de los jarillones (2) con el material (10) extraído de la zanja (9) 3- Method according to claim 1 and 2 characterized by the reinforcement of the vases (2) with the material (10) extracted from the trench (9)
4- Procedimiento según la reivindicación 1, 2 y 3 caracterizado por qué en la zanja (9) sobre sus paredes (14) se depositan tramos de laminas en membrana en poleolefinas (11) con diferentes diámetros de alto 4- Method according to claim 1, 2 and 3 characterized in that in sections of the trench (9) on its walls (14) membrane sections are deposited in polleolefins (11) with different high diameters
5- Procedimiento según la reivindicación 1, 2, 3, y 4 caracterizado porque dentro de la zanja (9) los tramos instalados de la membrana en poleolefinas (11) en sus extremos a lo largo se entreveran unos con los otros (15) 5- Method according to claim 1, 2, 3, and 4 characterized in that within the trench (9) the installed sections of the membrane in poleolefins (11) at their ends along are interwoven with each other (15)
6- Procedimiento según la reivindicación 1, 4, 5 y 6 caracterizado por que las membranas (11) cuentan con orificios de diferentes diámetros 7 6- Method according to claim 1, 4, 5 and 6 characterized in that the membranes (11) have holes of different diameters 7
7- Procedimiento según la reivindicación 1, 4, 5 y 6 caracterizado porque, los sedimentos (13) extraídos del rio (1) se depositan dentro de la zanja (9) y sus Membranas (11)  7- Method according to claim 1, 4, 5 and 6 characterized in that, the sediments (13) extracted from the river (1) are deposited inside the trench (9) and its membranes (11)
8- Procedimiento según la reivindicación 1 y 6 caracterizado porque el relleno de sedimentos (13) de la cavidad (9) se recubre con un capa de tierra (10) del refuerzo de los jarillones (2) 8- Method according to claim 1 and 6 characterized in that the sediment filling (13) of the cavity (9) is covered with a layer of soil (10) of the reinforcement of the vases (2)
PCT/IB2012/001245 2011-06-22 2012-06-21 Method for reinforcing the levees of rivers, lagoons and lakes and controlling seepage therethrough WO2012176059A1 (en)

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Application Number Priority Date Filing Date Title
CO11-078045 2011-06-22
CO11078045A CO6330166A1 (en) 2011-06-22 2011-06-22 PROCEDURE FOR REINFORCEMENT AND REGULATION OF THE FILTRATIONS OF THE JARILLONES OF THE LAGOON AND LAKE RIVERS

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Citations (8)

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Publication number Priority date Publication date Assignee Title
JPS59150829A (en) * 1983-02-15 1984-08-29 Takenaka Doboku Co Ltd Laying device of water-sealing sheet
JPS6040409A (en) * 1983-08-16 1985-03-02 Nippon Solid Co Ltd Improvement of environment of dam and river
JPS63122817A (en) * 1986-11-07 1988-05-26 Shimizu Constr Co Ltd Construction of cut-off wall using water-impermeable sheet and water-impermeable sheet therefor
JPH03217517A (en) * 1990-01-23 1991-09-25 Kajima Corp Construction of water-shield film wall
US5454668A (en) * 1994-05-25 1995-10-03 Baroid Technology, Inc. Flood barrier and a method for forming a flood barrier
DE19953264A1 (en) * 1999-11-05 2001-06-07 Bilfinger Berger Bau Underground retention wall esp. to seal off waste dumps etc. has full-length internal chamber with drainage system
DE10222607A1 (en) * 2002-05-21 2003-12-04 Zueblin Ag Barrier wall to prevent seepage of contaminated water out of dump to surrounding ground has two layers of foil with hollow element between them which may be filled with water to resist seepage
DE102005022829A1 (en) * 2005-05-12 2006-11-16 GEOTOP GbR Gesellschaft für Baugrund- & Umweltuntersuchungen (vertretungsberechtigter Gesellschafter: Dipl.-Geol. Ronald Grube, 10437 Berlin) Production of seals in hydraulic engineering for improving flooding protection comprises lifting a vertically running trench at the site of a dam or dyke using a rotary hoe, securing the lateral walls and further processing

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59150829A (en) * 1983-02-15 1984-08-29 Takenaka Doboku Co Ltd Laying device of water-sealing sheet
JPS6040409A (en) * 1983-08-16 1985-03-02 Nippon Solid Co Ltd Improvement of environment of dam and river
JPS63122817A (en) * 1986-11-07 1988-05-26 Shimizu Constr Co Ltd Construction of cut-off wall using water-impermeable sheet and water-impermeable sheet therefor
JPH03217517A (en) * 1990-01-23 1991-09-25 Kajima Corp Construction of water-shield film wall
US5454668A (en) * 1994-05-25 1995-10-03 Baroid Technology, Inc. Flood barrier and a method for forming a flood barrier
DE19953264A1 (en) * 1999-11-05 2001-06-07 Bilfinger Berger Bau Underground retention wall esp. to seal off waste dumps etc. has full-length internal chamber with drainage system
DE10222607A1 (en) * 2002-05-21 2003-12-04 Zueblin Ag Barrier wall to prevent seepage of contaminated water out of dump to surrounding ground has two layers of foil with hollow element between them which may be filled with water to resist seepage
DE102005022829A1 (en) * 2005-05-12 2006-11-16 GEOTOP GbR Gesellschaft für Baugrund- & Umweltuntersuchungen (vertretungsberechtigter Gesellschafter: Dipl.-Geol. Ronald Grube, 10437 Berlin) Production of seals in hydraulic engineering for improving flooding protection comprises lifting a vertically running trench at the site of a dam or dyke using a rotary hoe, securing the lateral walls and further processing

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* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 200140, Derwent World Patents Index; AN 2001-376177 *
DATABASE WPI Week 200403, Derwent World Patents Index; AN 2004-024188 *
DATABASE WPI Week 200702, Derwent World Patents Index; AN 2007-010101 *

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